- PCB Revision 0.1
The first sample PCB (rev 0.1) was designed on April 14, 2014, and had a few jumper wires.
- PCB Revision 0.2
The second run was designed on May 19, 2014, which corrected some of the electronics designs and added an eMMC module socket for test purposes. Note that the eMMC is not much faster than SD card due to the slow eMMC host speed in the SoC. We could see only ~10% improvement.
- PCB Revision 0.3
There is no big different from Revision 0.2. It is for the mass production.
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